jvm/core/src/main/java/org/apache/tvm/API.java
<reponame>haoyang9804/tvm-exp/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.tvm;

import java.util.HashMap;
import java.util.Map;

/**
 * TVM API functions.
 */
public final class API {
  private static ThreadLocal<Map<String, Function>> apiFuncs
      = new ThreadLocal<Map<String, Function>>() {
        @Override
        protected Map<String, Function> initialValue() {
          return new HashMap<String, Function>();
        }
      };

  /**
   * Get a tvm api function according by name.
   * @param name function name.
   * @return a TVM Function.
   */
  public static Function get(final String name) {
    Function func = apiFuncs.get().get(name);
    if (func == null) {
      func = Function.getFunction(name);
      apiFuncs.get().put(name, func);
    }
    return func;
  }

  /**
   * Cannot be instantiated.
   */
  private API() {
  }
}
